Rimfire Pics...Show em off!!!

mmattockx said:
Just curious why it matters? It is a .22LR, it most likely has the 1:16 twist that has been standard for decades.


Mark
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The Rem 700 AAC-SD had a barrel twist rate optimized to stabilize the sub-sonic rounds for which it was designed to run. I was curious if the .22 variant made any accomodations in the same regard. Although the .22 barrel twist rate is generally standardized @ 1:16 RH, it can vary from 9 to 17 depending on the application. For instance, a tighter twist rate may assist in stabilizing a .22 subsonic round

Long story made longer... it doesn't matter, just curious;).
 
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>Jenkins< said:
Don't know why it matters , but if you read the top of the page the guy asked so I tried to answer!
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Mattock was curious as to why you want to know the twist rate, not why you posted your location.
And myself, I'm a Jenkins from PEI, and I was just wondering if you were local.
 
>Jenkins< said:
Don't know why it matters , but if you read the top of the page the guy asked so I tried to answer!
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I thought you had asked the original question, didn't realize you were just answering incorrigible's question.


incorrigible said:
The Rem 700 AAC-SD had a barrel twist rate optimized to stabilize the sub-sonic rounds for which it was designed to run. I was curious if the .22 variant made any accomodations in the same regard. Although the .22 barrel twist rate is generally standardized @ 1:16 RH, it can vary from 9 to 17 depending on the application. For instance, a tighter twist rate may assist in stabilizing a .22 subsonic round

Long story made longer... it doesn't matter, just curious.
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I now understand. It will depend on the ammo it is intended for, since standard velocity .22LR is sub-sonic and works just fine out of a 1:16 twist. Some of the heavier 60gr stuff does need a faster twist, though.


Mark
 
mmattockx said:
It will depend on the ammo it is intended for, since standard velocity .22LR is sub-sonic and works just fine out of a 1:16 twist. Some of the heavier 60gr stuff does need a faster twist, though.
Mark
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Sir - standard velocity .22RF ammuntion is not sub-sonic. Only sub-sonic 22LR ammunition marked on the box as 'sub-sonic' IS sub-sonic.

The accepted Speed of Sound in still air @20C/68F is 1126 fps at or around sea level.

Standard velocity .22RF ammunition shooting the usual 40gr bullet has a velocity of 1138fps.

tac
 
tacfoley said:
Sir - standard velocity .22RF ammuntion is not sub-sonic. Only sub-sonic 22LR ammunition marked on the box as 'sub-sonic' IS sub-sonic.

The accepted Speed of Sound in still air @20C/68F is 1126 fps at or around sea level.

Standard velocity .22RF ammunition shooting the usual 40gr bullet has a velocity of 1138fps.

tac
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I hate to break it to you, but most of the standard velocity target ammo I have is sub-sonic. There may be exceptions, but the majority of it I have used is sub-sonic because crossing the trans-sonic region is detrimental to accuracy.


22forever said:
CCI Standard velocity ammo is rated at 1070 fps. so it is subsonic. http://www.cci-ammunition.com/products/detail.aspx?use=5&loadNo=0032
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+1. Federal Gold medal is 1080fps and Eley green box is 1085fps.


Mark
 
ATTENTION!: everybody from post 862 and down.

Do you NOT understand what a picture thread is?!

pt_84059.jpeg
 
Major Sights said:
ATTENTION!: everybody from post 862 and down. Do you NOT understand what a picture thread is?!
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How's this for a picture:p

7fad1149.jpg


tacfoley said:
I am corrected, but confused.

How then can it be called 'standard' if it is all different?

tac
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Because the vast majority of 22. cal barrels fall into the standard catagory, but options exist; ie antique, pistol, special purpose, etc.

P1131311.jpg


So I finally got it all together, just to find out for some reason I'm missing the magazine plunger, mag plunger spring and barrel hold down bolts:rolleyes:... go figure. On the up side I figured if I move the reciever position back 1/4" I can now use the Archangel magazines as well so I was pretty happy about that:D. With the stock locked in place its almost 30 inches so good for non restricted and I was able to utilize the amibdexterious G36 top charging handle as a non-actuated charger for the 10/22 bolt by going through the top of the reciever so all in all I've been pretty pleased with how things turned out.
 
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tacfoley said:
I am corrected, but confused.

How then can it be called 'standard' if it is all different?

tac
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I think "standard velocity" was what was once considered the standard .22LR load. Then the high velocity stuff that runs well over 1200fps came out. There is no actual standard that the velocity conforms to that I know of.

Also note that max velocity for .22LR seems to occur around 16" of barrel length. The very long barrels on many target rifles actually slow the bullet down and can slow down even the faster standard velocity ammo to sub-sonic speeds.


Major Sights said:
ATTENTION!: everybody from post 862 and down.

Do you NOT understand what a picture thread is?!
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Grumpy, grumpy. I thought the holidays were supposed to perk everybody up. :D

My CIL/Anschutz 190:
100_1995.jpg


100_1994.jpg



Mark
 
Lets move forward gentlemen....:cheers:

A blonde Winchester 190 with an old school Bushnell 3X-7X scope.
(Just re-finished the stock and forearm with 8 hand rubber coats of Birchwood Casey Tru-Oil)

IMG_7243.jpg

IMG_7234.jpg
 
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